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Re: high availability between real servers ?

To: <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: high availability between real servers ?
From: "Alex Kramarov" <alex@xxxxxxxxxxxxxxx>
Date: Thu, 1 Aug 2002 09:34:48 +0200
Joseph Mack wrote


> but do you know about
>
>
http://www.linuxvirtualserver.org/Joseph.Mack/mini-HOWTO/LVS-mini-HOWTO-2.ht
ml#ss2.5
>
> What I think you are saying is that you want a one network LVS, with the
client IPs being
> an IP on the realservers. I think if you're going to do this you would
need to make
> sure that the client IP wasn't one of the RIPs. Maybe having 2 NICs on
each realserver,
> with the RIP on eth1. Let us know how it goes.

actually, my connections hang even if i use a different server from the real
server, define another vip on the internal NIC of the director, and all 3
ip's (vip, rip, client) are on the same network (10.0.0.) using lvs-nat. any
combination of the 3 ip's on the same network result in hanged connections
to vip - maybe i am missing something

adding another NIC is out of the question - it's 1U servers with 2 nics,
both of them are being used.

i have another idea - since i just completed setting up cipe tunnel into the
director from my company's internal network, and using the cipe director's
address as vip works fine, i was thinking to try opening a cipe connection
(no encryption, simple ip tunnel) that will have ip addresses on another
network, real server will connect to the director through cipe, and will
make requests to a vip setup on the director's end cipe ip :

director - 10.0.0.1
cipe ip 10.10.0.1
VIP - 10.10.0.1 (with real server 10.0.0.1)
--------------------------------------------------------------
real server 10.0.0.10
cipe ip - 10.10.0.10

the requests from real server will go to 10.10.0.1 from 10.10.0.10

any ideas would it work ? someone tried this ? it's just will take some time
to setup, so i wanted to ask you thist ...

Alex.



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